Reprogramming the PCM

EEPROM

General Description
The Electronically Erasable Programmable Read Only Memory (EEPROM) is a permanent memory that is physically soldered within the ECM. The EEPROM contains program and calibration information that the ECM needs to control engine operation.

EEPROM Programming
1. Set-up - Ensure that the following conditions have been met:
- The battery is fully charged.
- The ignition is "ON."
- The Vehicle Interface Module cable connection at the DLC is secure.
2. Program The ECM using the latest software matching The vehicle. Refer to up-to-date Techline equipment user's instructions.
3. If the ECM fails to program, proceed as follows:
- Ensure that all ECM connections are OK.
- Check the Techline equipment for the latest software version.
- Attempt to program The ECM. If the ECM still cannot be programmed properly, replace the ECM. The replacement ECM must be programmed.

Functional Check
1. Perform the On-Board Diagnostic System Check.
2. Start the engine and run for one minute.
3. Scan for DTCs using the Tech 2.